1999
- Ulbrich, U., M. Christoph , J.G. Pinto, J. Corte-Real, 1999: Dependence of Winter Precipitation over Portugal on NAO and Baroclinic Wave Activity. Int. J. Climatol., 19, 379-390.
- Ulbrich, U., M. Christoph, 1999: A Shift of the NAO and Increasing Storm Track Activity over Europe due to Anthropogenic Greenhouse Gas Forcing. Climate Dynamics, 15, 551-559.